SU1292793A1 - Frost-resistant foam generating agent to put out fires - Google Patents

Abstract

The invention relates to frost-resistant frothers used for extinguishing fires, and allows to reduce viscosity at sub-zero temperatures, reduce the cost of composition and increase its fire-extinguishing efficiency. The foaming agent contains 30-50 wt.% Sulfonic acids or sodium salts of alkylaryl sulfonates, 10-20% ethanolamine, 3-10% sodium acetate or a mixture of 3-5% sodium nitrite with 1-5% sodium nitrate and water up to 100%. The composition additionally contains 4-5% sodium carbonate and 1.8-2.0% higher fatty alcohols. To prepare the foaming agent, the sulfonic acid is mixed with ethanolamine. The mixture is cooled and the calculated amount of water is introduced. The composition is stirred until a homogeneous liquid and sodium acetate and sodium chloride are subsequently dissolved in it. The viscosity of the concentrate obtained is 250 cP. 2 hp f-ly, 2 tab. u (L | S g y so oo

Description

FIELD OF THE INVENTION The invention relates to fire suppression, in particular to frost-resistant frothers used to extinguish fires of petroleum products, rubber compounds and wood.

The aim of the invention is to reduce viscosity at sub-zero temperatures, reduce the cost and increase fire extinguishing efficiency.

The foaming agent is prepared as follows.

Example 1. To prepare 100 g of a blowing agent, 40 g of sulfonic acid and 15 g of ethanol-amine are mixed (with stirring). During the neutralization process, the temperature of the mixture rises to 120-130 ° C. The mixture is then cooled to 60-70 ° C and 27.5 g of water are introduced (calculated amount). The composition was stirred until a uniform liquid was obtained and 10 g of sodium acetate and 7.5 g of sodium chloride were subsequently dissolved in it. After cooling to room temperature, 2% working solutions are prepared from the concentrate prepared in this way for testing. The viscosity of the concentrate obtained is 250 cP.

Example 2. 40 g of sulfonic acid neutralize 15 g of ethanolamine. The mixture is cooled to 60-70 ° C, 25 g of water is added and stirred until a homogeneous liquid is obtained. 10 g of sodium acetate, 5 g of sodium nitrite and 5 g of sodium nitrite are then successively dissolved. The viscosity of the cooled to room temperature concentrate is 266 cP.

Example 3. To prepare 100 g of a blowing agent, 40 g of sulfonic acid and 15 g of ethanolamine are mixed with increased fire extinguishing efficiency. During the mixing process, the temperature of the mixture rises to 120-130 ° C. Then add 2 g of higher fatty alcohols and, stirring the mixture, cool it to 60-70 ° C, add 25.5 g of water and continue mixing until a homogeneous liquid is obtained. Then, 10 g of sodium acetate and 7.5 g of sodium chloride are dissolved in succession. The viscosity of the concentrate is 265 cps.

The critical rate of supply of the solution for quenching is 0.03.

In tab. 1 and 2 presents the results of tests of the proposed composition and the composition of the prototype.

Table 1

Continuation of table 1

For the time being, the acuatees are flying with the total amount of tresopoles marketed to the foaming agents.

Continuation of table 1

17.5 12.5

Monoethanol-amine and monoethanol amine acetate in a ratio of 0.1-2: 1

thirty

50

1200-1400 -43 -52 7.0-7.5 248-253 8.9-10.4 0.04 2410-4360 -48 -66 -66 6.5-7.0 240-243 8.8-10, 4 0.04

In compositions 1-12 (Table 1), the limiting contents of the initial surfactant are sulfonic acids (30-50%) is ethanolamine (10-20%). Violation of the limiting values leads to a decrease in the quality indicators imposed on the frother m.

In compositions 45-56 (Table 1), diethanolamine, triethanolamine, and a mixture of ethanolamine with sodium carbonate were used as ethanolamine.

All compositions include up to 100% water.

Claims (3)

Invention Formula . A frost-resistant fire extinguishing foaming agent, including sulfonic acids or sodium salts of alkylarylsulphonates, ethanolamine, acetate and water, is characterized in that, in order to reduce viscosity at negative temperatures, it contains sodium acetate in sodium acetate and additionally sodium chloride or mixture sodium nitrite with sodium nitrate in the following ratio, wt.%: Ethanolamine 10-15 Sodium acetate 3-10 Sodium chloride or 1.5-7.5 A mixture of sodium nitrite with sodium nitrate 3-5 Sodium carbonate 4-5 WaterEverything 50 3. Foaming agent according to claim 1, distinguished45 This is due to the fact that, in order to increase the extinguishing efficiency, it additionally contains higher fatty alcohols in the amount of 1.8-2.0 wt.%. Compiled by Y. Kutsenko Editor A. LezhninTehred I. VeresKorrektor G. Reshetnik Order 309/7 Circulation 430 Subscription VNIIPI USSR State Committee for Inventions and Discoveries 1 13035, Moscow, Zh-35, Raushsk nab. 4/5 Production and printing company, Uzhgorod, ul. Project, 4 table 2 Sulfonic acid or sodium salts alkylaryl sulfonates30-50 Ethanolamine 10-20 Sodium acetate 3-10 Sodium Chloride or Sodium Nitrite Mixture with sodium nitrate 3-5 WaterEverything 2. A foaming agent according to claim 1, characterized in that, in order to reduce the formation of foaming, it additionally contains sodium carbonate in the following ratio, wt.%: Sulfonic acids or sodium salts alkylaryl sulfonates30-50 Ethanolamine 10-15 Sodium acetate 3-10 Sodium chloride or 1.5-7.5 A mixture of sodium nitrite with sodium nitrate 3-5 Sodium carbonate 4-5 WaterEverything 3. Frother under item 1, I distinguish